Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
chien cac » hien cac, thien cac, chien cuoc
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
cac tao » cau tao, cac tro, cac tac
dinh va » dinh van, tinh va, sinh va
dinh ve » dinh ket, dinh van
cua tre » cua te, cuu tre, cua triet

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky nang xa hoi. chieu chien cac tao va ((dinh va) or (dinh ve)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. chieu chien cac tao va ((dinh va) OR (dinh ve)) cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. chieu chien cac tao va ((dinh va) or (dinh ve)) cua tre*.